Agas mixture contains 4.5 mol br2 and 33.1 mol f2. (a) compute the mole fraction of br2 in the mixture. (b) the mixture is heated above 150°c and starts to react to give brf5: br2(g) 1 5 f2(g) 8n 2 brf5(g) at a certain point in the reaction, 2.2 mol brf5 is present. determine the mole fraction of br2 in the mixture at that point.

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience.b. report the adverse drug experience to the irb only if there are several other occurrences.c. report the adverse drug experience as part of the continuing review report.d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.

Coal contains energy. a. light b. kinetic c. chemical d. mechanical

Aproton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?